🛢️💧 Coolant Found in Fuel Water Separator – DD15 Engine Diagnostic 💧🛢️During inspection, our specialist tech discovered coolant contamination inside the fuel water separator of this DD15 engine — a sign of a deeper issue that requires immediate attention.Coolant and diesel fuel should never mix. When coolant enters the fuel system, it can severely affect fuel lubrication and cause internal corrosion or injector damage if not repaired promptly.💡 Possible causes of coolant in the fuel system:

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